The products made of aluminum beam and aluminum ring (open loop and closed loop of each one),the base and pillar with a thimble. The bottom surface of the base is circular, the bottom diameter is 67mm, the total height of pillar and the base is about 100mm. Aluminum beam and aluminum ring are made by 0.5mm thickness aluminum, aluminum beam length is about 140mm, width :14mm; the diameter of the aluminum ring is not less than 50mm.
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It consists of AL beam, AL ring (one split ring and one closed ring), support with thimble and base, and is used to demonstrate the existing of magnetic field.
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